Window cleaning device



Feb. 7, 1961 PRESSER wmoow CLEANING DEVICE Original Filed March 13. 1956 2 Sheets-Sheet 1 INVENTOR LEISER PRESSER.

ATTORNEY Feb. 7, 1961 v L. PRESSER 2,970,337

WINDOW CLEANING DEVICE Original Filed March 15, 1956 2 Sheets-Sheet 2 INVENTOR LEISER PRESSER ATTORNEY United States PatentC F WINDOW CLEANING DEVICE Leiser Presser, 1367 46th St., Brooklyn, N.Y.

Original application Mar.-13, 1956, Ser. No. 571,169,

now Patent No. 2,885,708, dated May 12, 1959. Divided and this application Mar. 13, 1959, Ser. No.

4 Claims. (Cl. 1'5250.04)

This invention relates to Window cleaners, this being a division of my application filed March 13, 1956, Serial No. 571,169 and which matured into Patent No. 2,885 ,708.

It is an object of this invention to present a device,

preferably of the type that is connected to a source of motive power, and which will clean several sections of' awindow with which it is operatively associated. And in this aspect of my invention it is my object to provide a plurality of window cleaning members simultaneously moving along a plurality of predetermined paths, an objective accomplished by a novel arrangement of single guiding means operatively associated with all of said cleaning members, the said guiding means providing a plurality of predetermined paths in parallel relation to the window.-- In one aspect of my invention the cleaning elements are adapted to clean laterally adjacent window sec-'- tions, and in another aspect they are adapted to cleanvertically adjacent window sections.

1 Another object of this'invention is the provision of water-ejecting means for coaction with the wiper elements. And in this aspect of my invention it is my objective to provide water reservoir means movably associated with the wiper carrier means, so that water will be operatively directed against the window only in the regions of the wiper elements -when they arein operative engagement with the window.

Other objects are the provision of novel holding means" from the drawings and the description hereinafter giveni Referring to the drawings, Figure 1 is a fragmentary front view of a form of my invention showing three wiperelements and associate parts in operative position.

Figure 2 is a fragmentary section of Fig. 1 taken substantially along line 2-2. v

Figure 3 is a fragmentary section of Fig. 1 taken sub stantially along line 3-3.

' Figure 4 is a section of Fig. 3 taken along line 4-4. Figure 5 is a section of Fig. 1 taken along line 55. Figure 6 is a section of Fig. 2 taken along line 66. Figure 7 is a vertical sectional elevation of another form of my invention, the section being taken along line 7-7 of Fig. 8, one of the wiper-holder members being shown by dot-dash lines in its retracted position.

Figure 8 is a rear elevation of Fig. 7.

' Figure 9 is a section of Fig. 7 taken along line 9-9.

ln the forms of my invention illustrated in the drawings, several wiper-carrier means are mounted on and supported by a single rotatably mounted carrier rod, this being in contradistinction to the embodiment illustrated in single wiper carrier.

in which the carrier rod is adapted to support only a The carrier rod is preferably provided with theaded means interengaged with said carrier means, whereby upon an operative rotation of the rod the carrier means will be moved along said rod to effect an operative wiping actionagainst the window. There is also a single guide member adjacent and in parallel relation to' determined by the position of said single guide member.'.

supported by the bearing 86. At the opposite end of car-s said carrier rod, a component of said carrier means being slidably mounted over said guide member, whereby all the wiper elements are maintained in operative position against the window, and are all movable along a path The various embodiments of my inventionalso include retractable holding means for the wiper elements, each of said latter means being rotatably mounted over a rodlike guide member.

In the form of my invention illustrated in Figs. 1 to 6, a reversible motor 82 is operatively mounted on the base 83. The said motor is connected by gears 36a, 35a, 38a: and 39a in known manner to the terminal portion 84 of carrier rod 85, said terminal'portion 84 being rotatably rier rod 85 is the terminal shaft 87 rotatably'supported by the bearing portion 88 mounted upon base 89.

The said carrier rod 85 contains a conventional car-1.

rier thread 90 thereon; and in operative engagement with said thread 90 are the respective threaded portions 91? of the bored walls 92 of wiper-earr'ier'lmen'rbers 93', 941i 1 5: The sa d qarr e rmembers are-mountedin. spaced.

relation, and are so positioned that upon the operative.

tation of carrier rod- 85, -.theywill move: in unison along x portions of the longitudinal extent of said rod 85'. Each:

of said carrier-members has spaced depending legs% and." 97 between which is mounted a wiper arm 98, the latter: having a central bore therethrough through which extends, the guide rod 99 operatively supported by structures 100 and 101 mounted, respectively, on said bases 83 and 89..

Each of said arms 98 is swingably mounted over said rod 99, and is maintained in its operative position by a latch. member 102 pivotally supported by a fastener 103 on one. of said depending legs of the corresponding carrier member. As illustrated in Fig. 5, showing the latch in its.

closed position, the pin 69a is maintained in frictional err-. gagement with the latch 102 by the action of spring 72a against the head 70a of said pin, the adjusting screw 73a; maintaining the desired tension in said spring to keep the;

. latch 102 in its operative position. I By operatively swing;

ing the latch 102 into its retracted position (as shown by the dot-dash position of the latch on carrier 93, Fig.1) the coacting wiper arm 98 can be retracted in the manner; aforesaid. The wiper element 62a is pivotally supported 1 upon arm 98' in the manner described in my said parent;

application.

This particular embodiment shows water reservoirs 104 mounted on each of said carrier members 93, 94 and 95. Extending downwardly from the base 105 of each of said I reservoirs are two pipes 106 and 107, these extending into the legs 96 and 97 of the respective carriers. In the ar-, rangement illustrated, inclined ducts 108 communicate with the terminals of each of said pipes 106 and 107-, the rear outlet of each of said ducts facing the window 22a, as

illustrated in Fig. 2.

Figs.- -1 to 6 of my above-mentioned parentapplication 5' It will further be noted that carrier 93 has an outward-' ly protruding stud 109 maintained in position by the locking screw 110; and carrier has a similar but 0p-' positely positioned outwardly extending stud '111 main-.

tained in position by the screw 112. These studs are- Fatented Feb. 7, 1961 3 The said .stud 109 is also adapted for engagement with arm 113, for bringing the arm into electrical engagement with the contact 117 on m'icroswitch 115. Electrical conductors =119, 120and 121 1:22 are electrically com nested. tosthe. said reversible motor 82 in known manner. The: arrangement is such that when the circuit is op. eratively closed through microswitch 115, the motor-82' will operate in one direction; and :when the circuit is operatively closed through microswitch 116, the motor 82 will operate in the opposite direction, all in wellknown manner; connecting the respective mioroswitches and reversible motor 82 is herein given, sincev such construction is of conventional nature and is well known-to those skilled in-the art, and further because such a detailed description will not further aid in an understanding of the present invention.

- From the above description it is apparent that when the motor 82 operates in one direction, the carrier rod 85 will operate in a correspondingdirection, whereupon the three wiper-carrier members 93, 94 and 95 will move in unison in. one direction. This continues until one of the end carriers, such as carrier 95, reaches an end posi-' tion',,.such as is illustrated in Fig. 1. When the micro-- switch 116 is operatively actuated, the circuit is closed through microswitch 116, causing a-reversing of motor 82, therebyalsocansing a reversed movement of carrier rod 85 and thethreecarriers operativelymounted'upon it. Similarly, when the carrier 93 reaches the-extreme left position, the microswitch 115-wil1 be actuated, in: the manner described; toclose the circuit through microswitch: 115 and thereby 'cause a changeof direction oimotor-82;;

.It is thus-apparent that asiong-as the motor 82 contirmous ly operates, there will be a continuous window'- leani'ngz o'peration of 'the three carrier "members, the action being of reciprocating nature, for the reasons: hereinabove given; and inasmuch as there are a plurality of:-wiper members, it is evident that the cleaning action can be very'rapid.

This embodiment is further provided with adjustable means to enable the entire unit to be moved vertically along a Window, so as to enable different sections of the window to be cleaned. The lateral window frames 123 and 124 each containsa track 125', each having therein a-longitudinal- T-'slot 126. The respective bases 83-and 89 on opposite sides of the window contain bolts 127: the heads 128 of which are slidably positioned withinsaid T-slots. To adjustably move the unit to a new position, the nuts 129- are loosened, whereupon the entire unit can be slidably moved to a desired new position, whereafter the nuts 1 29 are tightened to secure the unit in such position.

In the form of my invention illustrated in Figs. 7"t0 9, a carrier rod 85a and guide rod 99a are employed; these being substantially analagous to the correspondinglynumbered components of Figs. 1 to 6. Mounted on the upper carrier member 130 is the reservoir 1'31, supplying water intoa' plurality of carrier members, in a mannet to be hereinafter described. Carrier member 130 containsthe threaded bored'port-ion 132, whereby the op-* erativ'e rotation of carrier rod 8'5a'will cause an operative movement of carrier member 130 and its associated partsportion ng, these .being, pnogressiyelyofiset with-"respect.

.No .detailed 'description of the circuitto each other. Extendingthrough and supported by the.

top of intermediate portion 139 is the stud 141 upon the shank of which the intermediate wiper arm 143 is rotatably supported. Extending through and supported by the said bottom-most portion 140 is the stud 144- upon the shank of which is rotatably mounted the wiper arm 145. Wiper elements 146, I47 and 148 are pivotally mounted upontheir respectiyecarrier arms-135, 143 and 145 by the brackets 149, in .the. manner aforesaid. The rear edges 150 of all said wiper elements are in one plane, so that they may simultaneously engage .an -ad.-. jacent window during the operative. movement. of the carrier member 130 in the longitudinal direction of said carrier rod 85a. The said latch 137, as well as the latches 151 and 152, are retractable, to permit therespective carrier arms 135, 143 and 145 to be operatively retracted, together with the associated wiper elements 146, 147 and. 1.48. It will be, noted that-the latter-mare in *overlappingrelation, so as to assure that all portions oi thewindow are operatiyely engaged by the wipers with" no spaces. therebetween. Because of the above-described offset relationship of portions. 138, 139 and 145-of thecarrier bar 134, all three wiper elements can. be operatively retracted without interference Fig. .9 .shows the latch construction-employed in this embodiment of my invention. The. latch. 152 of springmaterial, hasnan inwardly curved portion 153 ineng'age ment. with the-.corr.e.sponding wiper arm. 145, thereby yieldably :holdingit in position against the window.

Extending downfrom the base of reservoir 131; isthe. main-water feed pipe 154,. having. branches 155;, 156;. 15 7 and. 158 leading into spaced portionsof-carrienbar 134. The :said branches: communicate with channels: 159' which terminate .inoutlets 1'60 adjacent :thewiper elements. In this manner a plurality of sprays can be di rected against the window during, the operative wiping action of thi's device. 1

With the last-described embodiment of my invention. it isapparent. that vertically aligned sections of a window; can be. simultaneouslycleaned by a plurality of coacting wiper elements.

In theabove description, the invention, has been dis,

closed merely by way of example and in preferred mannet; but obviously many variations and modifications may be. made therein. vIt is to be understood, therefore, that the. .inventionisnot limited to anyspecific. formor manner of. practicing same, except insofar as. such. .lintir tations.are...speoified in they appended claims.

I claim:

1. In a deviceafo-r cleaning; a window, a plurality of wiper elements, a plurality of carrier members, a rm tatable threaded carrier rod, means to rotate said rod,

'- an elongated guiderodparallel to said carrier rod,.-said carrier members having a plurality of arms each swingahly and slidably mounted on said. guide rod and each supporting one of said wiper elements, said carrier members having two open-ended apertured portions, said two rods extending through said tWo apertured portions, respectively, said carrier members being in threaded engagement. with said. carrier rod and in slidable engagement with said guide rod, whereby the operative-rotation of. said carrier rod will cause an operative. movementof. said carrier members with the saidarms and wiper elements in the direction of the. longitudinal. extent of said. guide. rod,.means to hold. said arms in operative positions at which the respective wiper elements. are in. engagement. with: vsaid window, water. reservoir means supportedhy and movable with. said. carriermeans, and.

conduit means communicating with. and extending from 'saidresenvoir means. .tothe respective. regions; on :said

plurality of aunts each support ng, one of said; wiper: -cle anta un s t ae a damsnect e e e s, m gin;

threaded carrier rod, means to rotate said rod, elongated guide means parallel to said rod, said carrier members each having two open-ended apertured portions extending there-through, each of said arms being swingably and slidably mounted on said guide means, means to hold said arms in operative positions at which the respective wiper elements are in engagement with said window, water conduit means, apertured spray means communicating with said conduit means facing generally rearwardly and disposed above said wiper elements, said rod extending through one of said apertured portions and said guide means extending through the other of said apertured portions, said carrier members each being inthreaded engagement with said carrier rod and in slidable engagement with said guide means, whereby the operative rotation of said carrier rod will cause simultaneous operative movements of said carrier members and the respective wiper elements supported thereby in the direction of the longitudinal extent of said rod.

3. In a window-cleaning device, a wiper element, carrier means supporting said element, a rotatable threaded carrier rod in threaded engagement with said carrier means, means to rotate said rod, elongated guide means parallel to said rod and in slidable engagement with said carrier means, whereby the operative rotation of said carrier rod will cause an operative movement of said carrier means and said wiper element supported thereby in the direction of the longitudinal extent of said rod, said carriermeans having a bar extending downwardly therefrom, second carrier means supported by said bar, said carrier means having pivotally mounted arms supporting said respective wiper elements, and spring means urging said arms rearwardly.

4. In a window-cleaning device, the combination according to claim 3, apertured portions in said bar with openings facing generally rearwardly, and water supply conduits operatively connected to said apertured portions.

- References Cited in the file of this patent UNITED STATES PATENTS 1,369,817 Klatt Mar. 1, 1921 1,484,251 Bennan -1..- Feb. 19, 1924 1,514,340 Rise et al. Nov. 4, 1924 1,644,545 Robertson Oct. 4, 1927 1,789,217 Cherry Jan. 13, 1931 1,793,354 Bornstein Feb. '17, 1931 1,982,624 Barker Dec. 4, 1934 2,644,187 Lacy July 7, 1953 FOREIGN PATENTS France Apr. 29, 1929 

